299efffaf5
arch/alpha/ev5.cc:
Changed c style casts of Faults to dynamic_casts
arch/alpha/faults.cc:
AlphaFault is now an abstract class.
arch/alpha/faults.hh:
AlphaFault is now an abstract class. Also, AlphaMachineCheckFault and AlphaAlignmentFault multiply inherit from both AlphaFault and from MachineCheckFault and AlignmentFault respectively. These classes get their name from the generic classes.
cpu/o3/alpha_cpu_impl.hh:
Changed a c style cast to a dynamic_cast for a Fault
sim/faults.hh:
All generic Fault classes are now abstract. Also, MachineCheckFault and AlignmentFault inherit FaultBase as a virtual base class to help resolve ambiguities when they are multiply inherited in ISA specific classes. The override the isMachineCheckFault and isAlignmentFault functions appropriately, and provide a standard name for these faults.
--HG--
extra : convert_revision : 2cb906708e3eaec4a12587484c09e50ed6ef88fc
92 lines
3.2 KiB
C++
92 lines
3.2 KiB
C++
/*
|
|
* Copyright (c) 2003-2005 The Regents of The University of Michigan
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are
|
|
* met: redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer;
|
|
* redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution;
|
|
* neither the name of the copyright holders nor the names of its
|
|
* contributors may be used to endorse or promote products derived from
|
|
* this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef __FAULTS_HH__
|
|
#define __FAULTS_HH__
|
|
|
|
#include "base/refcnt.hh"
|
|
#include "sim/stats.hh"
|
|
#include "config/full_system.hh"
|
|
|
|
class ExecContext;
|
|
class FaultBase;
|
|
typedef RefCountingPtr<FaultBase> Fault;
|
|
|
|
typedef const char * FaultName;
|
|
typedef Stats::Scalar<> FaultStat;
|
|
|
|
// Each class has it's name statically define in _name,
|
|
// and has a virtual function to access it's name.
|
|
// The function is necessary because otherwise, all objects
|
|
// which are being accessed cast as a FaultBase * (namely
|
|
// all faults returned using the Fault type) will use the
|
|
// generic FaultBase name.
|
|
|
|
class FaultBase : public RefCounted
|
|
{
|
|
public:
|
|
virtual FaultName name() = 0;
|
|
virtual FaultStat & stat() = 0;
|
|
#if FULL_SYSTEM
|
|
virtual void ev5_trap(ExecContext * xc) = 0;
|
|
#endif
|
|
template<typename T>
|
|
bool isA() {return dynamic_cast<T *>(this);}
|
|
virtual bool isMachineCheckFault() {return false;}
|
|
virtual bool isAlignmentFault() {return false;}
|
|
};
|
|
|
|
FaultBase * const NoFault = 0;
|
|
|
|
//The ISAs are each responsible for providing a genMachineCheckFault and a
|
|
//genAlignmentFault functions, which return faults to use in the case of a
|
|
//machine check fault or an alignment fault, respectively. Base classes which
|
|
//provide the name() function, and the isMachineCheckFault and isAlignmentFault
|
|
//functions are provided below.
|
|
|
|
class MachineCheckFault : public virtual FaultBase
|
|
{
|
|
private:
|
|
static FaultName _name;
|
|
public:
|
|
FaultName name() {return _name;}
|
|
bool isMachineCheckFault() {return true;}
|
|
};
|
|
|
|
class AlignmentFault : public virtual FaultBase
|
|
{
|
|
private:
|
|
static FaultName _name;
|
|
public:
|
|
FaultName name() {return _name;}
|
|
bool isAlignmentFault() {return true;}
|
|
};
|
|
|
|
|
|
#endif // __FAULTS_HH__
|